Air circulating apparatus



May 18, 1937. F. c. REYNOLDS ET AL AIR C IRCULAT ING APPARATUS 4 Sheets-Sheet 1 Filed Oct. 2, 1935 4 Qiwv ATTORNEY.

May 18, 1937. F. c. REYNOLDS ET AL AIR CIRCULATING APPARATUS Filed Oct. 2, 1955 4 Sheets-Sheet 2 BY 4 Wm /a AQLM/ M A oRNY.

4 Sheets-Sheet 3 Filed 001;. 2. 1935 May 18, 1937. F. c. REYNOLDS ET 1.

AIR CIRGULATING APPARATUS INVENTORS $41.) A ORNEY.

May 18, 1937. F. c. REYNOLDS ET AL AIR C IRCULAT ING APPARATUS 4 Sheets-Sheet .4

Filed Oct. 2, 1935' ORNEY.

Patented May 18, 1937 UNITED STATES PATENT OFFICE 2,081,105 AIR CIRCULATING APPARATUS Application October 2, 1935, Serial No. 43,206

2 Claims.

This invention relates to ventilating devices and more particularly to the type of ventilating device which is adapted to be installed in window openings of rooms and which operates to force fresh filtered air into the room and/or to exhaust the room air to the outdoors.

An object of our invention is to provide a ventilating device which is of improved construction and arrangement of parts and which is provided with an improved form of casing, pleasing in appearance and requiring very little more room space, if any, than the usual window sill.

Other objects are to provide a casing structure which is water tight even though a portion thereof extends outside of the window and is exposed to the elements, a casing structure so formed that the interior thereof is readily accessible for the purpose of removing and replacing filters and for oiling and making minor repairs to the air circulating apparatus installed therein; and lastly a casing which provides for an.

effective sealing engagement between the sill rail of a window sash and the top of the casing, so that air will fiow only through the casing.

The invention consists in the novel construction and combination of parts, to be more fully described hereinafter, and the novelty of which will be particularly pointed out and distinctly claimed. a

In the accompanying drawings, to be taken as a part. of this specification, we have fully and correctly illustrated two preferred embodiments of our invention, in which drawings:

Fig. 1 is a perspective view showing a ventilating device constructed in accordance with the present invention, as installed in the conventional window of a room:

Fig. 2 is a transverse vertical section of the apparatus shown in Fig. 1, the section being taken on the line 2-2 of Fig. 1:

Fig. 3 is a transverse vertical section similar to Fig. 2, and showing a modified form of our invention:

Fig. 4 is a plan view of the device shown in Fig. 3, showing the rear cover as raised for'the purpose of exposing the interior thereof.

- In accordance with one preferred embodiment of our invention, we provide a ventilating device which is adapted to be positioned longitudinally across an opening defined by the sill rail of a partially raised window sash and the window sill. The device comprises a casing structure including a top wall divided longitudinally into a front cover portion fixedly secured to the remaining portiohs ofj the casing and adapted to be disposed on the room side of the window sash, and a rear cover portion hingedly connected at its rear edge to the rear portions of the casing so that it pivots about an axis extending lengthwise of the casing and substantially parallel to the plane of the window sash. We also provide a sealing means along the forward edge of the rear cover portion, against which the lower part of the sill rail of the window sash engages so as to prevent the infiltration of outside air or sound and to prevent the escape of room air, except through the casing structure. The casing is provided with a rear inlet opening, a front outlet opening in the forward portions thereof, and with means in the interior thereof for effecting a positive movement of air through the casing. In the preferred embodiment of our invention, there is arranged a filter for eliminating foreign particles entrained in the incoming outside air.

By reason of this construction and arrangement, a ventilating device of relatively large capacity may be provided and it will only be necessary for a smallportion of the casing to extend into the room, thereby providing a ventilating device which occupies a minimum of room space, one which is unofiensive to the eye, and one which offers a minimum of interference to the passage of light into the room. The rear hinged cover portion may be readily opened upon raising the window sash to permit the insertion or replacement of the filter and to permit minor repairs and oiling and greasing of the mechanical parts or the ventilator.

Referring now in detail to the construction illustrated and first to Figs. 1- and 2, the reference numeral l0 indicates a ventilating device which is mounted in the opening defined by a partially raised window sash and the window sill of a conventional window. The window sill is indicated by the reference numeral H, the jambs by the reference numeral l2 and a sash by the reference numeral l3. The sash i3 is slidably mounted in the lambs l2 and includes a lower sill rail H which engages the upper 45 surface of the ventilating device III. The space between the ends of the ventilating device and the lambs I! may be filled by suitable blocks I 5 which prevent infiltration of outside air or 50 the escape of room air around the ends of the ventilator. The blocks l5 are arranged in the plane of the sash i3 and .are provided along their upper edges with sealing material I6 such as felt or rubber, for engagement by the sill 55 rail 14 when the sash is lowered to the position shown in Fig. 1.

The ventilator comprises a casing l1 including a bottom wall l8 mounted on the window sill II, a rear wall l9 having an inlet opening 20 for the admission of fresh outside air, a front wall 2|, and end walls 22 suitably bevelled at the front as indicated at 23, to give a pleasing appearance. The casing i1 also comprises a top wall 24 divided longitudinally at 25 into a front cover portion 26 rigidly secured to the front and end walls 2| and 22 respectively, and a rear cover portion 21 hingedly connected at its rear edge by means of hinges28 to the rear wall IQ of the casing.

A motor-blower unit 30 may be mounted within the casing and serves to draw fresh air from the outside into the casing through the inlet opening 20, and to force such air into the room through grille-covered openings 3| in the front cover portion 26 of the top wall 24. Disposed behind the motor-blower unit 30 and on the down-stream side of the inlet opening 20, is a' filter 32 which is removably mounted in vertically arranged guides 33 and extends lengthwise across the casing. The filter operates to remove any entrained foreign particles in the air entering the ventilator through the inlet opening 211.

It is to be noted that, while we have shown a motor-blower unit which functions only to bring in fresh air to the room, our invention in all of its aspects is not to be considered as being so limited, for the unit may be constructed to exhaust air from the room, or, both to bring in and to exhaust air.

A channel-shaped member 35 extends along the forward edge of the hinged cover portion 21 and is fixed thereto by any suitable means, such, for example, as by spot welding. A sealing material 36 such, for example, as felt, rubber, orthe like, is arranged within the channel 35 and provides a sealing surface against which the sill rail 14 of the sash engages and prevents the passage of air or sound from the outside into the room. As can be seen from an examination of Fig. 2, the rear cover portion 21 slopes downwardly and rearwardly, and this, in conjunction with the upright flanges of the channel 35 and the sealing engagement between the sill rail and the material 36, prevents the collection of rain water and the like on the cover portion 21 and the leakage of such water past the channel into the room.

From the above description it will be readily appreciated that, in order to -remove-or replace the filter 32, all that is necessary is to raise the sash l3 and open the rear hinged cover portion 21. By reason of the fact that the channel 35 is secured to the rear cover at points spaced from In Figs. 3 and 4 of the drawings, we have illustrated a ventilating device in which is -included substantially the same casing features as those of the previously described modification of Figs. 1 and 2. The ventilating device comprises a casing 53 including a bottom wall 51, secured to the window sill Ila, a rear wall 52 having an inlet opening 53, end walls 54, a front wall 55 having an outlet opening 56 in which is arranged adjustable louvers 51 for directing the air to different portions of the room, and a top wall 58 divided longitudinally adjacent the center line of the easing into a front cover portion 59 rigidly secured to the casing and a hinged rear cover portion 60 connected by hinges 6| with the 'rear wall 52 of the casing.

The front cover portion 59 is also provided with spaced air outlet openings 62 and 63 respectively, and a louver 64 is hingedly mounted within each of the openings 62 and 63 and serves to direct the air from the casing upwardly and towards the window sash l3a, if desired.

The end walls 54 are offset as indicated at 65 and vertical channels 66 are arranged at the points of the oifsets and are secured to the end walls for the purpose of receiving the vertical ends of filler blocks 15a, the latter filling the space between the ends of the casing and the sides of the window frame, the same as the blocks I5 in Fig. 1.

Arranged within the casing, is a motor-blower unit 10, comprising a motor 1| and a blower 12 arranged at each side of the motor. Each of the blowers 12, comprises a housing 13 having inlet openings communicating with the inlet 53 of the casing through an inlet chamber 14 and an outlet opening 15 communicating through an air outlet chamber 16, with the louver controlled openings 56, 62, and 13 in the front wall and the fiange 8| suitably secured, as by means of spot stantially the same plane as the window sash so that when the window sash is lowered, an effective closure of the window opening is effected. .As in the previously described modification,

the hinged rear cover portion carrying a sealing means, against which the sill rail 14a is lowered, provides ready accessibility to the interior of the casing for replacing filters, oiling the mechanical parts, and making minor repairs. Also, the hinged rear cover portion 60 slopes downwardly and rearwardly, and, in conjunction with the flange 31 and sealing .material 63, provides for readily shedding rain water and the like from the exposed portions of the ventilator and 'for preventing leakage of such water into the-room.

What we claim and desire to secure by Letters Patent is as follows:-- i

1. A ventilating device forcirculating air in a room andof the type adapted to be positioned longitudinally across an opening defined by a sill rail of a partially raised window sash and a window sill, comprising a casing structure including a top wall divided longitudinally into a front cover portion adapted to be disposed on the room side of the window, and a rear cover portion adapted to be arranged outside of the window and being hingedly connected along its rear edge to the rear portions of the casing, the rear cover portion sloping downwardly and rearwardly from the longitudinal dividing line to the rear edge thereof so as to provide for shedding rain water and the like from the top of the casing, and means carried by the forward part of the rear cover portion and extending longitudinally of said casing adjacent the dividing line and providing'an engaging and sealing surface between the sill rail and the casing.

2. A ventilating device for circulating air in a room and of the type adapted to be positioned longitudinally across an opening defined by a sill rail of a partially raised window sash and a window sill, comprising a casing structure including a top wall divided longitudinally into a front cover portion adapted to be disposed on the room side of the window, and a rear cover portion adapted to be arranged outside of the window and being hingedly connected along its rear edge to the rear portions of the casing, the rear cover portion sloping downwardly and rearwardly from the longitudinal dividing line to the rear edge thereof so as to provide for shedding I rain water and the like from the top of the casing, and means carried by the forward part of the rear cover portion and extending longitudinally of said casing adjacent the dividing line and providing an engaging and sealing surface between the sill rail and the casing, said means comprising an upright flange member arranged adjacent to and extending in the same direction as the longitudinal dividing line and a longi-- tudinally extending strip of sealing material lying adjacent the flange and interposed between the casing and the sill rail.

. FRANK C. REYNOLDS.

WAL'I'ER H. KIRCHHEIM. 

